Extract and run GoogleEarth*Portable.
Cache in temp folder deleted when leaving, if you want to keep cache in portable folder (to use offline) edit GoogleEarth*Portable.ini.
Settings of installed GoogleEarth should be preserved.

Google Search with satellite imagery without installation.
Download Portable GoogleEarth on RapdiShare (10.3 MB)
(md5: 5d02863dc03ae06474a6d6314506a6a1)
Download Portable GoogleEarth Plus on RapdiShare (9.8 MB)
(md5: 5ff5d1ab063c7fe478117e223219edc5)
Download Portable GoogleEarth Pro on RapdiShare (10.6 MB)
(md5: f2e27f09bd0eecd042a42be0cfe26777)